Results 101 to 110 of about 8,504 (230)

Search for Slow Bars in Two Barred Galaxies with Nuclear Structures: NGC 6951 and NGC 7716

The Astrophysical Journal
We investigate two barred galaxies with nuclear structures, NGC 6951 and NGC 7716, to examine whether they host slow bars. Using Gemini/GMOS long-slit spectroscopy, we calculate the bar pattern speed with the Tremaine–Weinberg method and detect ...
Yun Hee Lee, Ho Seong Hwang, Virginia Cuomo, Myeong-Gu Park, Taehyun Kim, Narae Hwang, Hong Bae Ann, Woong-Tae Kim, Hyun-Jeong Kim, Ji Yeon Seok, Jeong Hwan Lee, Yeon-Ho Choi   +11 more
doaj   +1 more source

Surface photometry of barred spiral galaxies

The Astrophysical Journal, 1990
La photometrie de surface detaillee a ete realisee pour 6 galaxies spirales barrees de premier type en utilisant des plaques photographiques a haute resolution. Les observations et les reductions des donnees sont presentees et les profils azimutaux de la luminosite sont extraits et analyses.
Kouji Ohta, Masaru Hamabe, Ken-Ichi Wakamatsu   +2 more
openaire   +1 more source

UV–Vis Spectra of Carbonic Acid: Rationalizing Experimental Redshifts between Monomer and Bulk based on (H2CO3)n Calculations

ChemPhysChem, Volume 26, Issue 18, September 19, 2025.
In bulk carbonic acid (e.g., in interstellar icy dust grains) cluster formation produces two distinct UV‐Vis spectral features redshifted by ≈2 eV (25 nm) and by ≈5 eV (80 nm) compared to gas phase single molecule carbonic acid 's adiabatic ionization energy. Theory and experiment were used to investigate the origin of these shifts.
Dennis F. Dinu, Bastian Klein, Chaojiang Zhang, Radu A. Talmazan, Thomas Loerting, Hinrich Grothe, Ralf I. Kaiser, Maren Podewitz   +7 more
wiley   +1 more source

Do Strong Bars Exhibit Strong Noncircular Motions?

The Astrophysical Journal
Galactic bars induce characteristic motions deviating from pure circular rotation, known as noncircular motions. As bars are nonaxisymmetric structures, stronger bars are expected to show stronger noncircular motions.
Taehyun Kim, Dimitri A. Gadotti, Yun Hee Lee, Carlos López-Cobá, Woong-Tae Kim, Minjin Kim, Myeong-gu Park   +6 more
doaj   +1 more source

Morphological Evolution of Disk Galaxies and Their Concentration, Asymmetry, and Clumpiness (CAS) Properties in Simulations across Toomre’s Q Parameter

The Astrophysical Journal
We investigate the morphological and structural evolution of disk galaxies in simulations for a wide range of Toomre’s Q parameters. In addition to the inspection of conventional bar modes, we compute the concentration, asymmetry, and clumpiness (CAS ...
T. Chantavat, S. Yuma, P. Malelohit, T. Worrakitpoonpon   +3 more
doaj   +1 more source

A Milky Way-like barred spiral galaxy at a redshift of 3. [PDF]

Nature, 2023
Costantin L, Pérez-González PG, Guo Y, Buttitta C, Jogee S, Bagley MB, Barro G, Kartaltepe JS, Koekemoer AM, Cabello C, Corsini EM, Méndez-Abreu J, de la Vega A, Iyer KG, Bisigello L, Cheng Y, Morelli L, Arrabal Haro P, Buitrago F, Cooper MC, Dekel A, Dickinson M, Finkelstein SL, Giavalisco M, Holwerda BW, Huertas-Company M, Lucas RA, Papovich C, Pirzkal N, Seillé LM, Vega-Ferrero J, Wuyts S, Yung LYA.   +32 more
europepmc   +1 more source

Gas Dynamics in the Barred Seyfert Galaxy NGC4151 - II. High Resolution HI Study

, 1998
We present sensitive, high angular resolution (6" x 5") 21-cm observations of the neutral hydrogen in the nearby barred Seyfert galaxy, NGC4151. These HI observations, obtained using the VLA in B-configuration, are the highest resolution to date of this ...
A. Pedlar, A. Robinson, C. G. Mundell, D. L. Shone, SIMKIN   +4 more
core   +1 more source

Investigation of the Baryonic Mass Tully–Fisher Relationship for Normal and Barred Spiral Galaxies

, 2023
M. N. Al Najm, Hasanain Hassan AL-Dahlaki, Bashar Alkotbe   +2 more
openalex   +2 more sources

N-body Simulations of Galaxy Bars Generated by Satellite Collisions: Effects of the Impact Geometry

The Astrophysical Journal
Bars, a common and important structure in disk galaxies, can be induced by galaxy interactions. Although there have been some studies on bar formation in flybys or collisions, the vast parameter space still leaves many scenarios that require further ...
Yufan Fane Zhou, Zhiyuan Li, Hui Li
doaj   +1 more source

Bar-induced central star formation as revealed by integral field spectroscopy from CALIFA

, 2017
We investigate the recent star formation history (SFH) in the inner region of 57 nearly face-on spiral galaxies selected from the Calar Alto Legacy Integral Field Area (CALIFA) survey. For each galaxy we use the integral field spectroscopy from CALIFA to
He, Yanqin, Li, Cheng, Lin, Lin, Wang, Enci, Xiao, Ting   +4 more
core   +1 more source